PMID- 17980921 OWN - NLM STAT- MEDLINE DCOM- 20080407 LR - 20131121 IS - 0166-4328 (Print) IS - 0166-4328 (Linking) VI - 187 IP - 2 DP - 2008 Mar 5 TI - Environmental prenatal stress alters sexual dimorphism of maternal behavior in rats. PG - 284-8 AB - The prenatal external environment can affect fetuses, altering the maternal behavior that they express when mature. In the present study, environmental prenatal stress (EPS) was applied to pregnant rats in their final week of gestation, and when their female offspring reached maturity, the long latency effect of the stress on those offspring was ascertained on their induced maternal behavior (MB), accessory olfactory bulb (AOB) morphology and plasma levels of ACTH and corticosterone (Cpd B). EPS reduced: the percentage of these virgins that showed induced MB, their retrieval of foster pups, the time spent crouching, and the quality of nest building; it also increased the incidence of their cannibalism of foster pups. The EPS-treated females presented a male-like pattern of induced MB. They showed increased plasma levels of ACTH and Cpd B and increased numbers of mitral cells in the AOB. These findings provide evidence that stress applied to the pregnant rat produces long-lasting behavioral, neuroanatomical and hormonal alterations in the female offspring that can be observed when they reach maturity. FAU - Perez-Laso, Carmen AU - Perez-Laso C AD - Departamento de Psicobiologia, Universidad Nacional de Educacion a Distancia, c/Juan del Rosal, 10, 28040 Madrid, Spain. FAU - Segovia, Santiago AU - Segovia S FAU - Martin, Jose Luis R AU - Martin JL FAU - Ortega, Esperanza AU - Ortega E FAU - Gomez, Francisco AU - Gomez F FAU - Del Cerro, M Cruz R AU - Del Cerro MC LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070929 PL - Netherlands TA - Behav Brain Res JT - Behavioural brain research JID - 8004872 RN - 9002-60-2 (Adrenocorticotropic Hormone) RN - W980KJ009P (Corticosterone) SB - IM MH - Adrenocorticotropic Hormone/blood MH - Analysis of Variance MH - Animals MH - Corticosterone/blood MH - Environment MH - Female MH - Male MH - *Maternal Behavior MH - Nesting Behavior MH - Neurons/cytology MH - Olfactory Bulb/*cytology MH - Pregnancy MH - *Prenatal Exposure Delayed Effects MH - Rats MH - Rats, Wistar MH - Sex Factors MH - Statistics, Nonparametric MH - Stress, Psychological/*blood EDAT- 2007/11/06 09:00 MHDA- 2008/04/09 09:00 CRDT- 2007/11/06 09:00 PHST- 2007/01/12 00:00 [received] PHST- 2007/07/06 00:00 [revised] PHST- 2007/09/18 00:00 [accepted] PHST- 2007/11/06 09:00 [pubmed] PHST- 2008/04/09 09:00 [medline] PHST- 2007/11/06 09:00 [entrez] AID - S0166-4328(07)00496-2 [pii] AID - 10.1016/j.bbr.2007.09.029 [doi] PST - ppublish SO - Behav Brain Res. 2008 Mar 5;187(2):284-8. doi: 10.1016/j.bbr.2007.09.029. Epub 2007 Sep 29.